Annual report pursuant to Section 13 and 15(d)

Fair Value of Assets and Liabilities - Additional Information (Detail)

v2.4.1.9
Fair Value of Assets and Liabilities - Additional Information (Detail) (USD $)
Dec. 31, 2014
Debt Instrument Fair Value Carrying Value [Abstract]  
Derivative warrant liability $ 0us-gaap_DerivativeFairValueOfDerivativeLiability